The following data represent the length of life, in seconds, of 50 fruit flies subject to a new spray in a controlled laboratory experiment:
|
17
|
20
|
10
|
|
23
|
13
|
12
|
19
|
18
|
24
|
|
12
|
14
|
|
|
13
|
|
|
10
|
13
|
|
|
16
|
18
|
|
13
|
|
32
|
|
|
10
|
11
|
|
13
|
|
18
|
|
10
|
|
27
|
19
|
16
|
|
|
|
10
|
|
14
|
15
|
10
|
|
|
|
15
|
(a) Construct a double-stem-and-leaf plot for the life span of the fruit flies using the stems 0∗, 0·, 1∗, 1·, 2∗, 2·, and 3∗such that stems coded by the symbols _ and · are associated, respectively, with leaves 0 through 4 and 5 through 9.
(b) Set up a relative frequency distribution.
(c) Construct a relative frequency histogram.
(d) Find the median.